Handle-bar and post adjustment.



Nd. 638,156. Pvamnted Now-28, |899.

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HANDLE BAH AND PUST ADJUSTMENT.-

- (Application med Fb. 14, 1899.)

(No Model.)

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f NrTnD STATES PATENT OFFICE.

ARTHUR BACON,

OF SAME PLACE.

HANDLE-BAR AND POST ADJUSTMENT.

SPECIFICATION forming part of Letters Patent No. 638,156, dated November28, 1899. Application filed February 14, 1899l Serial. No. 705,509. (Nombdel.)

T0 a/ZZ whom, t Wawy concern:

Be it known I, JOHN WIGGINS, a citizen of the United States, residing atMarshall, in the county of Calhoun and State of Michigan,have inventednew and useful Improvements in Adjustable HandleBar Clamps For Bicycles,of which the following is a specification. t

This invention has for its object to provide new and improved means foradjustably securing handle-bars or seat-posts of bicycles; and toaccomplish this object my invention consists in the features ofconstruction and in the combination or arrangement of parts hereinafterdescribed and claimed, reference being made to the accompanyingdrawings, in which* Figure 1 shows a front elevation of a portion of ahandle-bar and handle-barsupport, together with a section of thestandard into which the support lits. Fig. 2 shows a vertical sectionalview of the handle-bar and the handle-bar support, taken on line ai ofFig. l; and Fig. 3 shows a detached view of the shank used in making theadjustment.

Similar letters refer to similar parts throughout the several views. Y

In order to enable those skilled in the art to make and use myinvention, I will now describe the same in detail, referring to thedrawings, wherein- The letter' A indicates ahandle-bar, and E ahandle-bar or seat-post support composed of a cylinder provided at itsupper end portion with an external screw-thread engaged by a nut D. Ashere shown, the said external screw-thread is formed in a socket B,constituting a part of the upper end portion of the support E, andthrough which the handle-bar extends. The handle-bar is preferablyprovided with a collar or ferrule C, lying in the socket part B of thesupport. The lower end of this support E is constructed withlongitudinal slots M, the object of these slots being to allow the lowerend of the post or support E to be expanded by means of a tapering plug,which tapering plug is shown by H, and which is preferably made in theform of a nut adapted to engage with the screw-thread N on the lower endof the shank G. The plug H is also preferably provided with means forrevolving the same upon the shank, whereby it may be adjustedlongitudinally thereon. By this construction the plug can be so adjustedas to give greater or less expansion to the slotted lowerend portion ofthe post or support E. The upper end of the shank G is provided with ahead F, having in its upper side corrugations or grooves, as shown at J.

I is a pin passing through the head F and extending beyond the same oneither side.

The head F of the shank is adapted when raised, as hereinafterdescribed, to come in contact with the grooved or corrugated ferrule Cinorder to retain the handle-bar in any required position. The ends of thepin I, which extend beyond the surface of the head F of the shank G,rest in an annular groove in the nut D, said groove being of sufiicientwidth to allow the nut to be turned freely without binding the ends ofthe said pin I.

K are slots in the upper end portion of the post or support E, each endof the pin I resting in one of the slots K.

L is the tubular standard orouter cylinder to which the support E isattached. The construction is such that by revolving the nut D the pinI, which passes through the shank G, is raised and lowered to raise andlower said shank. When the shank is raised, the plug H is drawn into thelower end of the support E, spreading the same and securely and rigidlyattaching the said support to the cylinder L. At the same time that theshank draws the plug H into the lower end of the support E, spreadingthe same, the upper or corrugated end .I is brought into contact eitherdirectly with the handle-barA or with the corrugated ferrule C, attachedthereto, thereby rigidly securing the handle-bar in place. When the nutD is turned in the opposite direction, the tapering plug H may movedownward, allowing the lower end of the support E to assume its normalsize,when the handle-bar and the handle-bar support or seat andseat-support, as the case may be, may be raised or lowered to anyrequired position and secured therein by drawing the plug H into thelower end or slotted portion of the support E. It will be evident thatthis invention is adapted to adjust and secure the IOO bicycle-seat orbicycle handle-bar in any required position, and is also adapted to adjust the position of the handle-,bar in the socket or the seat in theproper position at the same time. It may also' be used for any analogouspurpose.

Having thus described myinvention, what I claim to have invented, anddesire to secure by Letters Patent, is-

1. The combination with an outer cylinder, of an inner cylinder slottedat its upper and lower end portions and provided at its upper endportion with an external screw-thread, an axialiy-turning handle-barcarried by the upper end of the inner cylinder, a tapering plug fittedinto the slotted lower end portion of the inner cylinder, a shankconnected at its lower end with said plug and constructed at its upperend to engage and disengage said handle bar, a nut engaging saidexternal screw-thread and having an annular groove in its inner side,and a pin extending from the upper end portion of said shank through theupper slotted end of the inner cylinder into the annular groove of saidnut, substantially as and for the purpose described.

2. Incombination with a handle-bar, the socket through which saidhandle-bar passes, the screw-threaded handle-bar support slotted at itsupper and lower end portions, a nut engaging the screw-thread of saidhandle-bar support,a shankprovided with a tapering plug adapted to fitin and expand the lower slotted end portions of said support,and a pinpassing through the said shank and the upper slotted end portion of saidsupport to engage with the nut, the ripper end of the shank corrugatedor notched to engage with the handlebar when the shank is raised bymeans of the nut and pin, substantially as described.

In testimony whereof I have hereunto set 'my hand in presence of twosubscribing Wit* nesses.

JOHN WIGGINS.

